Create Unlimited Virtual Drives in your Computer

Today i'm going to share a simple and may b an obsolete trick..
So today i will tell you all how to make your own drive on your System.

... To have one simply follow these steps:-
Step 1:Go to c drive, type cd c: (or any another drive from which you want to create new drive)

Step 2:Create a new folder say kvgroup (it is your directory to where your data will be stored from virtual drive)

Step 3:Go to command prompt and type subst z: c:\kvgroup

(z: is the name of new drive, c:\kvgroup is the location and name of the directory you created in Step 2.)

same way you can create lots of drives for any folder if you want... 

To remove the virtual drive

go to command prompt and type

subst z: /d

Rename Multiple Files Using Excel or Google Docs

Renaming multiples files on your Windows computer is easy. Select all the files, press F2 and type some descriptive text. Windows will append a unique sequence number to each of the file names.
That's a fairly quick solution but not very flexible because you don't get to specify any choices or criteria.
For instance, how do you append the current date to the filename ? Or you want to replace only certain words in the file names (like a spelling error)? Or you want files to follow a different renaming system like file-A.jpg instead of the default file(1).jpg.
To rename files in bulk more efficiently, you can either learn some complex shell scripting language (SED, AWK, Perl) or switch to something more simple  - a spreadsheet.

 

 Step 1: Type cmd and switch (using "cd" command) to the directory that contains the files you want to rename in bulk.
Step 2: Type "dir /b" to see a skeleton list of all files in the current directory. Copy that file list to the clipboard by selecting Mark from the contextual menu.
Step 3: The fun starts now. Fire your copy of Microsoft Excel or Google Docs Spreadsheets and paste those file names into the first spreadsheet column.
Step 4: In the blank adjacent column, add a corresponding Excel function - for instance, use SUBSTITUTE to change specific text in the filenames, use CONCATENATE() with DATE() if you want to add date to the filename, etc.

*For more complex criteria, you may want to put the file extensions in a separate column by splitting the file name using period (.) as the delimiter.
Step 5: Your source filenames are now in column A while the Destination files are in column B - we will now convert this into a DOS rename command.
In Column C, type the following Excel formula and your command is ready to be executed.

=CONCATENATE("ren ",A1, " ", B1)

Copy paste the same formula across all cells in column C for which you have corresponding values in Column A or B.
We are almost done. Copy all the values from column C to the clipboard and paste them inside the DOS window or better still, put them inside a new text file and give it a name like rename.bat.

 Execute and all files that match the criteria are renamed instantly...

Remove Computer Virus in USB using DOS command

Removing computer virus in USB is really difficult especially if we don't have an updated anti-virus software installed to our computer. Viruses will easily attack the computer and infect all the system files or even our personal files that are stored on this computer if we don't have an antivirus. Since, the license of an antivirus software is very expensive, here the simplest way to solve this problem(computer virus in flash drive or usb).

The "simplest way or steps to remove computer virus in USB using CMD or DOS commands".

1. Click start button and click Run.

2. Type CMD in the dialog box and Click OK.

     

   3. Type your Drive Letter for your USB and Press Enter in your keyboard, mine is D:

 

    4. Type dir/a to see all the hidden files inside your usb,also look the autorun.inf file. press enter key.

   5. You type this command, attrib -r -a -s -h in the command prompt or cmd to show all the hidden files.  Then press enter.

  6. Type del autorun.inf /s to delete the virus. Press enter after you type.

 7. Type again this command, dir/a to check whether the auturun.inf is already deleted.

Thank you for reading this post....

Error Message: "The command prompt has been disabled by your administrator"

When you attempt to run CMD.exe or a batch file, you may receive the message

"The command prompt has been disabled by your administrator".

This is caused by restrictions placed in Registry. 

Method 1: Using the console registry tool

Click Start, Run and type this command exactly as given below: (better - Copy and paste)

Method 2: Using Group Policy Editor in Windows XP

Navigate to

User Configuration \ Administrative Templates \ System

Double-click the Prevent access to the command prompt

then Disable or set the policy to Not Configured

Lock Any folder without using folder Lock software

-Lock Ravi folder (Transfer access to Control Panel)

run->notepad
type following command

ren Ravi Ravi.{21EC2020-3AEA-1069-A2DD-08002B30309D}

Save > Lock.bat
then
ren Ravi.{21EC2020-3AEA-1069-A2DD-08002B30309D} Ravi
save as > key.bat 

now to Lock folder "Ravi" double click on "Lock.bat" file.
to UnLock folder "Ravi" double click on "Key.bat" file.